Joint carrier phase estimation and forward error correction
US8543882B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 15, 2010 |
| Grant date | Sep 24, 2013 |
| Priority date | — |
| Expiry date | Sep 26, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/2963
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Methods and systems for processing an optical signal in a communication system are disclosed. The disclosed methods yield benefits for estimation and tracking of carrier phase of received signals at a digital coherent receiver without the use of differential coding. Specifically, phase ambiguity is removed by calculating the slope of the CPE at a location where the CPE begins to lose track of the received carrier phase signal. As such, a CPE offset adjustment may be applied in accordance with the calculated slope to reduce the number of ones and zeros corrected by a FEC decoder. Thus, the FEC aided CPE scheme may be a feed forward scheme that requires no training.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.